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java.lang.Error: Unresolved compilation problems:
The type PriorityQueue is not generic; it cannot be parameterized with arguments <Integer>
The type PriorityQueue is not generic; it cannot be parameterized with arguments <Integer>
The type PriorityQueue is not generic; it cannot be parameterized with arguments <Integer>
The type PriorityQueue is not generic; it cannot be parameterized with arguments <Integer>
Syntax error on token "pqs", delete this token

java.lang.Error: Unresolved compilation problems:
The type PriorityQueue is not generic; it cannot be parameterized with arguments <Integer>
The type PriorityQueue is not generic; it cannot be parameterized with arguments <Integer>
The type PriorityQueue is not generic; it cannot be parameterized with arguments <Integer>
The type PriorityQueue is not generic; it cannot be parameterized with arguments <Integer>
Syntax error on token "pqs", delete this token

java.lang.Error: Unresolved compilation problem:
The method sort(List) in the type Collections is not applicable for the arguments (PriorityQueue)</p>
<pre><code>at section3.JavaPriorityFlightQueue.joinQueue(JavaPriorityFlightQueue.java:31)

java.lang.Error: Unresolved compilation problems:
The type javax.servlet.Servlet cannot be resolved. It is indirectly referenced from required .class files
The method addServletWithMapping(String, String) in the type ServletHandler is not applicable for the arguments (Class<IDSrendServlet>, String)

Root Cause Analysis

java.lang.Error

Unresolved compilation problems:
The type PriorityQueue is not generic; it cannot be parameterized with arguments <Integer>
The type PriorityQueue is not generic; it cannot be parameterized with arguments <Integer>
The type PriorityQueue is not generic; it cannot be parameterized with arguments <Integer>
The type PriorityQueue is not generic; it cannot be parameterized with arguments <Integer>
Syntax error on token "pqs", delete this token